(19)

(11)

EP 2 304 181 A1

(12)

(43) Date of publication: 06.04.2011 Bulletin 2011/14 (21) Application number: 09755261.6 (22) Date of filing: 27.05.2009

(51) International Patent Classification (IPC):  F01C 1/30(2006.01) (86) International application number: PCT/US2009/003257 (87) International publication number: WO 2009/145898 (03.12.2009 Gazette 2009/49)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 29.05.2008 US 156181 (71) Applicant: FLSmidth A/S 2500 Valby (DK)	(72) Inventors: SCHWARTZ, Louis Bethlehem, PA 18017 (US) WAAGE, David Bethlehem, PA 18017 (US) (74) Representative: Johansson, Lars E.  P.O. Box 138 683 23 Hagfors 683 23 Hagfors (SE)